C++

Get a Header Field by Name

Demonstrates the Chilkat Email.GetHeaderField method, which returns the value of a header field by name. Header-field names are case-insensitive, so X-Priority and x-priority refer to the same field. This example reads several headers by name.

Background: Looking up a header by name is the quickest way to read a known field like Subject or a custom X- header. One caveat: some header names (such as Received) can legitimately appear more than once. When a field may repeat and you need every occurrence, enumerate by index with GetHeaderFieldName and GetHeaderFieldValue instead of looking up by name.

Chilkat C++ Downloads

Download Chilkat for C++

C++

#include <CkEmail.h>

void ChilkatSample(void)
    {
    //  Demonstrates the GetHeaderField method, which returns the value of a header field by
    //  name.  Header-field names are case-insensitive.

    CkEmail email;
    email.put_Subject("Quarterly report");
    email.put_From("alice@example.com");
    email.AddHeaderField("X-Priority","1");

    //  Get header field values by name.
    std::cout << "Subject = " << email.getHeaderField("Subject") << "\r\n";
    std::cout << "From = " << email.getHeaderField("From") << "\r\n";
    std::cout << "X-Priority = " << email.getHeaderField("x-priority") << "\r\n";
    }